linux-kernel - [PATCH 2/2] cpumask: remove unused mask field from struct irqaction.

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Message-Id: <200902131239.45293.rusty@rustcorp.com.au>
Date:	Fri, 13 Feb 2009 12:39:45 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] cpumask: remove unused mask field from struct irqaction.

Up until 1.1.83, the primitive human tribes used struct sigaction for
interrupts.  The sa_mask field was overloaded to hold a pointer to the
name.

When someone created the new "struct irqaction" they carried across
the "mask" field as a kind of ancestor worship: the fact that it was
unused makes clear its spiritual significance.

As long as we avoid all other bad omens, I'm sure the Gods will
forgive us.

Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
---
 include/linux/interrupt.h |    1 -
 1 file changed, 1 deletion(-)

diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -64,7 +64,6 @@ struct irqaction {
 struct irqaction {
 	irq_handler_t handler;
 	unsigned long flags;
-	cpumask_t mask;
 	const char *name;
 	void *dev_id;
 	struct irqaction *next;
--
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